The emission concentration of solid contaminant and gaseous contaminant was detected in the cooking process of five kinds of homely dish. In addition, the purification efficiency of solid contaminant was also tested towards four kinds of extractor hood. The results indicated that, with cooking different homely dishes, the average emission concentration of grease and particulate matter is 0.41～7.71 mg/m3 and 2.28～13.15 mg/m3 respectively, the average emission concentration of hydrocarbons and aldoketones is 121.97～518.32 μg/m3 and 288.8～1 361.6 μg/m3 respectively, the average emission concentration of non methane hydrocarbon representing VOCs is 1.13～13.46 mg/m3 (calculated by C). On the whole, all of the upper values occurred in cooking meat dish. From analyzing the composition of VOCs, alkane and olefin are primary contaminants in hydrocarbons category, ormaldehyde, acetaldehyde, acetone, propionaldehyde, n butanal and n valeraldehyde are primary contaminants in aldoketones category. Furthermore, the average purification efficiency of grease and particulate matter towards different extractor hood is 63.84%～83.52% and 61.02%～67.50% respectively, and the purification efficiency of side draught extractor hood is superior to european style extractor hood.